Intermittent Self-catheterisation

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Intermittent Self-catheterisation

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Intermittent self-catheterisation is a safe and effective way of managing patients with urinary retention or incontinence due to a neuropathic or hypotonic bladder. It has transformed the lives of people rendered housebound by bladder problems and has preserved the kidneys of children with spina bifida, and of adults with spinal cord injury.

Detrusor hyperactivity and functional obstruction: many have sphincter dysfunction and are at risk for pyelonephritis and upper urinary tract injury.

Detrusor underactivity - maybe associated with urge incontinence, for example, some patients with diabetes and with bladder neuropathy may have instability requiring bladder-relaxing drugs but also have intermittent weak detrusor function with poor emptying.[1, 4]The addition of bladder-relaxing drugs may worsen the baseline poor detrusor function, resulting in retention and overflow incontinence. In some cases, the solution may be to combine bladder-relaxing medical therapy with intermittent self-catheterisation.

Patient assessment

Patients should be referred to a urologist for full assessment and to initiate the patient in using self-catheterisation.[1]

Physical examination should include testing for pinprick sensation in the saddle area.

Sensory loss in the second to fourth sacral dermatomes implies diminished awareness of a full bladder.

Sensory loss that extends to the third lumbar dermatome suggests that catheterisation will be painless.[6]

Investigations

Urinalysis.

Blood U&Es, creatinine and glucose.

Ultrasound of the urinary tract.

Plain X-ray to show urinary calculi and spinal abnormalities.

In children, urodynamic assessment should include a cystogram to detect vesicoureteric reflux.

Requirements

Severe disability is not a contra-indication since patients in wheelchairs have mastered the technique despite paraplegia, an anaesthetic perineum, spinal deformity, intention tremor, mental handicap, old age or severe sight impairment.

Patients, and/or carer, must be highly motivated.

Adequate and effective education and support.

Catheterisation can be performed by the patient or carer, but must be gentle, especially if lacking sensation, and must be used more than four times a day.

They should always keep their catheter with them and not wait for urge before using.

The procedure should be performed 4-6 times a day, less frequent increases the risk of urinary tract infections and bladder volumes should not exceed 400 ml.

Intermittent catheters

Patient choice and ease of use are major considerations in the decision-making process regarding which catheter to prescribe, as are lifestyle and the underlying bladder problem. Silicon catheters are preferred over latex ones as they are associated with less infection risk and also avoid potential allergies. Providing patients with a range of suitable intermittent catheters will allow them to make informed choices and reduce wastage.[7]

Nélaton's catheters: come in a range of sizes and lengths.

Single use catheters: are sterile and have either a hydrophilic coating, which requires immersion in water for 30 seconds to activate, or a gel coating, which does not require any preparation prior to use.

Reusable catheters: are made out of polyvinyl chloride and are non-coated. They can be washed and reused for up to a week.

Catheter kits: combine an intermittent catheter with a urine containment pouch. This system is useful for travelling or when access to a toilet would be difficult.

I have twice now had a catheter removed and peed fine at first and it gradually stops The first time it last five days and the last time twice as long. What could cause this? Anyone else had the same...

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